Published Resources Details Letters Patent
- Title
- Means for signalling or effecting operations by means of sound vibrations
- Imprint
- United States Patent Office, 3342
- Description
Specification forming part of Letters Patent No. 913,372. Application filed May 4 1907.
Accession No.1436
- Abstract
"These improvements relate to appliances for giving a signal or effecting control of multiple apparatus at a receiving station as a consequence of the arrival at such receiving station of sound vibrations or waves conducted through water from the transmitting or controlling station…"